摘要
介绍了三种用于虚拟仪器的相位差测量的软件算法 :过零检测法、频谱分析法和相关分析法 ,详细探讨了相关分析法的原理及其在相位差测量中的应用 ,最后通过实验对三种算法进行了相位差测试比较。结果表明 :相关分析法的相位差测量具有精度高、抗干扰能力强等优点。
Three algorithms applied in phase difference measurement of virtual instruments are introduced, which are zero crossing detection and frequency spectrum analysis and correlation analysis. Then the principle of correlation analysis and application in the phase-difference measurement are discussed. At last, three algorithmic measuring results are compared by experiments. The results show that the phase difference measurement by correlation analysis has the advantages of precision and strong anti-jamming.
出处
《计算机测量与控制》
CSCD
2003年第6期415-416,422,共3页
Computer Measurement &Control
基金
山西省自然科学基金资助项目 ( 2 0 0 110 3 2 )
